[llvm-commits] [llvm] r107926 - /llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp
Jakob Stoklund Olesen
stoklund at 2pi.dk
Thu Jul 8 15:52:47 PDT 2010
Author: stoklund
Date: Thu Jul 8 17:52:47 2010
New Revision: 107926
URL: http://llvm.org/viewvc/llvm-project?rev=107926&view=rev
Log:
Revert "Fix broken isCopy handling in TrimLiveIntervalToLastUse"
This reverts commit 107921. It broke the clang self host.
Modified:
llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp
Modified: llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp?rev=107926&r1=107925&r2=107926&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp (original)
+++ llvm/trunk/lib/CodeGen/SimpleRegisterCoalescing.cpp Thu Jul 8 17:52:47 2010
@@ -618,14 +618,10 @@
// of last use.
LastUse->setIsKill();
removeRange(li, LastUseIdx.getDefIndex(), LR->end, li_, tri_);
- if (LastUseMI->isCopy()) {
- MachineOperand &DefMO = LastUseMI->getOperand(0);
- if (DefMO.getReg() == li.reg && !DefMO.getSubReg())
- DefMO.setIsDead();
- }
unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx;
- if (tii_->isMoveInstr(*LastUseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) &&
- DstReg == li.reg && DstSubIdx == 0) {
+ if ((LastUseMI->isCopy() && !LastUseMI->getOperand(0).getSubReg()) ||
+ (tii_->isMoveInstr(*LastUseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) &&
+ DstReg == li.reg && DstSubIdx == 0)) {
// Last use is itself an identity code.
int DeadIdx = LastUseMI->findRegisterDefOperandIdx(li.reg,
false, false, tri_);
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